CN102328399A

CN102328399A - Structure of sprue bush of mould requiring core pulling on front mould

Info

Publication number: CN102328399A
Application number: CN201110298467A
Authority: CN
Inventors: 张卫
Original assignee: Vanguard Wuxi Science and Technology Co Ltd
Current assignee: Vanguard Wuxi Science and Technology Co Ltd
Priority date: 2011-09-28
Filing date: 2011-09-28
Publication date: 2012-01-25

Abstract

The invention provides a structure of a sprue bush of a mould requiring core pulling on a front mould, which is characterized in that when the sprue bush is prevented from being damaged, impurities cannot enter the sprue bush, and further, materials cannot leak from the sprue bush, and the normal use of the mould is ensured. The structure of the sprue bush of the mould requiring the core pulling on the front mould comprises an upper fixed plate, a plate A, a front mould core, a rear mould core and the sprue bush, wherein the upper end of the sprue bush is fastened to the upper fixed plate, and the lower end of the sprue bush is communicated with the mould cavities of the front mould core and the rear mould core through runners after penetrating through the plate A. The structure of the sprue bush of the mould requiring the core pulling on the front mould is characterized in that the lower part of the sprue bush is of a cylindrical structure, and the outer circular surface of the sprue bush, which goes deep into the front mould core, is provided with a screw type oil groove.

Description

The sprue bush structure that needs the mould that front mould looses core

Technical field

The present invention relates to the technical field of structures of injection mould mould, be specially the sprue bush structure that needs the mould that front mould looses core.

Background technology

In the mould structure that the design demand front mould is loosed core, the reasonability of Design of Runner System is an importance of entire die structural design.Because front mould needs a somatotype action between upper mounted plate and A plate; Running gate system just in time is between upper mounted plate and the A plate. two boards relatively has a combination and the action that separates at the cooperation position of sprue bush in the somatotype process. in order to ensure mould in the somatotype course of action with the separating and combine reliably of sprue bush; Sprue bush of the prior art is a bottom closing in structure; Under the situation of normal volume production, can satisfy the steady production of mould, but damage or have foreign material to get into when the sprue bush place; Will cause mould gate cover place seriously to leak material, thereby cause the damage of mould easily.

Summary of the invention

To the problems referred to above, the invention provides the sprue bush structure that needs the mould that front mould looses core, it makes foreign material can not get into sprue bush when preventing that sprue bush from damaging, and then sprue bush can not leak material, guarantees the normal use of mould.

The sprue bush structure that needs the mould that front mould looses core; Its technical scheme is such: it comprises upper mounted plate, A plate, preceding die, back die, sprue bush; The upper end of said sprue bush is anchored on said upper mounted plate; The die cavity that runner is communicated with said preceding die, back die is passed through after running through said A plate in the lower end of said sprue bush, and it is characterized in that: the bottom of said sprue bush is a cylindrical structural, and the periphery that said sprue bush gos deep into said preceding die has spiral oil groove.

After adopting said structure of the present invention, because the sprue bush bottom is a cylindrical structural, so the cooperation position of sprue bush lower end and the sealing of preceding die runner is straight body structure; And the spiral helicine oil groove of Surface Machining that cooperates the position part of sealing at sprue bush with preceding die; Prevent the wearing and tearing between sprue bush and the preceding die hole, sprue bush and preceding die are after adopting being slidingly matched of straight body, thereby can not produce the gap between sprue bush and the preceding die when upper mounted plate and A plate somatotype. solve the risk that foreign material get into; It is when preventing that sprue bush from damaging; Make foreign material can not get into sprue bush, and then sprue bush can not leak material, guarantee the normal use of mould.

Description of drawings

Fig. 1 is a front view structural representation of the present invention.

The specific embodiment

See Fig. 1; It comprises upper mounted plate 1, A plate 2, preceding die 3, back die 4, sprue bush 5; The upper end of sprue bush 5 is anchored on upper mounted plate 1; The die cavity 5 that runner is communicated with preceding die 3, back die 4 is passed through after running through the A plate in the lower end of sprue bush 5, and the bottom of sprue bush 5 is a cylindrical structural, and the periphery of sprue bush 5 deeply preceding dies 3 has spiral oil groove 6.

Claims

1. the sprue bush structure that needs the mould that front mould looses core; It comprises upper mounted plate, A plate, preceding die, back die, sprue bush; The upper end of said sprue bush is anchored on said upper mounted plate; The die cavity that runner is communicated with said preceding die, back die is passed through after running through said A plate in the lower end of said sprue bush, and it is characterized in that: the bottom of said sprue bush is a cylindrical structural, and the periphery that said sprue bush gos deep into said preceding die has spiral oil groove.